Premium 18L cooler backpack with robust design and excellent functionality. It is manufactured from a stunning combination of patterned 420D ripstop polyester and 600D polyester. The main compartment has thick PE foam insulation encased in a waterproof PEVA inner liner. This sophisticated backpack has adjustable padded shoulder straps, a removable shoulder sling, a padded carry handle, two mesh side pockets and a large zippered front pocket.